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Post by Michael on Aug 28, 2013 6:34:57 GMT -5
Fuse did not blow. Relay did not click and display did not come on. Of course, I did not hit the power button.
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Post by mastertech on Aug 28, 2013 9:09:18 GMT -5
The relay should of clicked. Plug it in again and test across S12 and MG and see if you have your voltage.
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Post by Michael on Aug 28, 2013 9:42:46 GMT -5
No voltage across MG and S12!!
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Post by mastertech on Aug 28, 2013 9:52:15 GMT -5
I thought it was odd the 12v was bouncing and the diode was not shorted. Must of been something failing. Now we are just going to test some parts and find the bad ones and replace them. So first I want you to remove ic355 from the regulator board (the one that tested shorted) and test it for shorted legs. Meanwhile I will look for where to test that S12 source.
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Post by Michael on Aug 28, 2013 10:02:53 GMT -5
IC355 Removed. Reads 0.916 on the diode test between two outer legs.
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Post by Michael on Aug 28, 2013 10:11:25 GMT -5
IC352 also trys to show some reading on the outer legs but it shows (OL) after a split second. Do you think that might be bad also?
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Post by Admin on Aug 28, 2013 10:32:13 GMT -5
IC355 Removed. Reads 0.916 on the diode test between two outer legs. Test all 3 legs in different variations looking for a short. That reading you got maybe fine. |
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Post by mastertech on Aug 28, 2013 10:33:51 GMT -5
I agree.
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Post by Michael on Aug 28, 2013 10:40:17 GMT -5
All legs on IC355 tested in different variations. The only reading I get is only between two outer legs. Same is true for IC352.Of course IC352 is still attached to the board. All other 3 show no readings (OL)in any variation.
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Post by mastertech on Aug 28, 2013 10:58:34 GMT -5
I'm not seeing the problem here yet. You are going to have to jump the relay and see if F302 blows or not. On the back of the board that F302 is on look for the 4 pins of relay RY301. You will see 2 pins on 1 end that are offset. Solder a piece of wire connecting those 2 pins. Then again, make sure no wires are touching anything from that regulator board being removed and plug it in and see if the fuse blows. let me know.
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Post by Michael on Aug 28, 2013 11:19:32 GMT -5
Did not blow the fuse!
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Post by mastertech on Aug 28, 2013 11:22:01 GMT -5
Set your DMM on AC voltage and with the receiver plugged in I want you to test the 2 AC sockets on the back of the receiver and see what you get.
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Post by Michael on Aug 28, 2013 11:24:37 GMT -5
122 V on both
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Post by mastertech on Aug 28, 2013 11:34:38 GMT -5
Ok. Finally a reading I expected. Unplug it.
Now back to the regulator board. Before you removed ic355 you said it tested shorted across the 2 outer legs. Yet when you removed it the 2 outer legs did not show shorted on the regulator itself. So i need you to test the 2 outer holes on the board where that regulator was and see if that reads short. DMM on diode scale.
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Post by Michael on Aug 28, 2013 11:40:00 GMT -5
Two outer legs on IC355 indeed showed shorted both on the board and after it was removed. I tested the outer holes on the board and do not show any short.
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